Sophia and her brother james are both taking a psychology class together, and are studying for an examination. "i just can’t remember where the body produces the majority of its serotonin," complains james. sophia him by saying, "just remember that it is produced in the enteric nervous system, and you should have no problem knowing that the is the body part you’re looking for."
a. gastrointestinal system
b. basal ganglia
c. basal ganglia
d. pons

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Need asap plz hurry im being timed when a body cell divides through the process of mitosis, the chromosomes in the daughter cells a. represent only the healthiest chromosomes from the parent cell. b. represent only half of the chromosomes in the parent cell. c. are identical to the chromosomes of the parent cell. d. are formed when chromosomes from the parent cell cross over.